CMMG RECEIVER EXTENSION/STOCK KIT Review

The CMMG RECEIVER EXTENSION/STOCK KIT Made a Bold First Impression

The CMMG RECEIVER EXTENSION/STOCK KIT promises to be a simple yet crucial upgrade for any AR-15 build. At $85.99, it aims to deliver a reliable mil-spec buffer tube setup without breaking the bank, and CMMG is a name I generally trust. After spending over a decade tinkering with tactical rifles, I was eager to see if this kit lived up to the hype and offered true value for money.

My AR pistol build was crying out for a proper buffer tube and stock assembly. The existing setup was cobbled together from spare parts and felt flimsy. I needed something solid and reliable to improve both the ergonomics and overall performance of my firearm.

Unboxing the kit, I was immediately pleased with the simple, no-nonsense approach. The black finish looked clean and the parts felt robust in hand, suggesting a decent level of manufacturing quality. The weight felt appropriate for a mil-spec assembly, neither too light as to feel cheap, nor overly heavy.

I considered options from Bravo Company Manufacturing (BCM) and Daniel Defense, both known for their high-quality components. However, their kits were significantly more expensive. The CMMG kit seemed to offer a good balance of quality and affordability, making it an attractive option for my project.

My initial impression was positive and hopeful; it looked like a solid foundation for my AR pistol build. I was particularly interested in how well it would hold up under extended use and whether it would enhance the overall shooting experience.

Real-World Testing: Putting CMMG RECEIVER EXTENSION/STOCK KIT to the Test

First Use Experience

I first tested the CMMG RECEIVER EXTENSION/STOCK KIT at my local shooting range, primarily focusing on rapid-fire drills and zeroing my optic. The range offered a controlled environment to assess its performance and identify any immediate issues. The installation was straightforward and the stock slid onto the buffer tube with minimal friction, locking securely in place.

During my range session, I experienced no malfunctions and was pleased with the enhanced stability the stock provided. The weather was dry, so I didn’t get to evaluate its performance in wet conditions during my initial use. The difference in shouldering the weapon compared to my previous setup was immediately noticeable, and the cheek weld felt much more natural.

No issues arose during the first range session. I was, however, curious to see if any problems would develop after extended use and under more challenging conditions.

Extended Use & Reliability

After several months of consistent use, including multiple range trips and a weekend training course in varying weather conditions, the CMMG RECEIVER EXTENSION/STOCK KIT has held up remarkably well. I’ve put several hundred rounds down range with the kit installed and it is still holding up well. There’s no noticeable wobble or loosening of the stock on the buffer tube.

There are very minor signs of wear and tear, mostly cosmetic scratches on the buffer tube’s finish. The black anodizing is showing some wear where the stock slides back and forth, which is expected with use. Cleaning and maintenance are simple, requiring only a quick wipe down with a lightly oiled cloth after each range session.

My previous experience with budget-friendly buffer tube kits often involved loose fittings and premature wear. The CMMG kit, however, has significantly outperformed those expectations, proving its worth as a reliable and durable upgrade.

Breaking Down the Features of CMMG RECEIVER EXTENSION/STOCK KIT

Specifications

The CMMG RECEIVER EXTENSION/STOCK KIT is designed for AR-15 platforms and features a mil-spec buffer tube. The kit includes the buffer tube, carbine buffer, buffer spring, end plate, and castle nut, providing a complete assembly for installing a collapsible stock. The buffer tube is constructed from durable aluminum with a black anodized finish.

These specifications are crucial for ensuring compatibility with a wide range of AR-15 stocks and maintaining reliable cycling of the rifle. The mil-spec dimensions guarantee a snug fit with most aftermarket stocks, while the quality buffer and spring contribute to consistent and smooth operation.

Performance & Functionality

The CMMG RECEIVER EXTENSION/STOCK KIT performs its job admirably by providing a stable and reliable platform for attaching a collapsible stock. The enhanced stability has resulted in faster target acquisition. There is no noticeable slop or movement once the stock is properly installed, ensuring a consistent cheek weld.

The primary strength lies in its simplicity and reliability. One area for potential improvement is the castle nut; a staked castle nut would provide additional security against loosening. Overall, the kit meets my expectations for a mil-spec buffer tube assembly at this price point.

Design & Ergonomics

The build quality is solid, with well-machined parts that fit together seamlessly. The aluminum construction keeps the weight manageable, adding minimal bulk to the rifle. The black anodized finish provides a sleek, professional look.

The design is straightforward and user-friendly, requiring no specialized tools for installation beyond a standard armorers wrench. I found the installation process to be simple and only took me a few minutes.

Durability & Maintenance

The kit is designed for long-term durability, thanks to its robust construction and quality materials. With proper care and maintenance, it should last for many years. Regular cleaning and lubrication of the buffer tube and spring will help prevent corrosion and ensure smooth operation.

Disassembly for cleaning and maintenance is simple, requiring only a few basic tools. The overall design makes it easy to inspect and replace individual components as needed.

Accessories and Customization Options

The CMMG RECEIVER EXTENSION/STOCK KIT is primarily designed as a foundation for further customization. It is fully compatible with any mil-spec AR-15 stock, allowing users to choose their preferred style and features. The kit does not include any specific accessories beyond the basic components needed for installation.

Users can easily add aftermarket sling mounts to the end plate or upgrade to a heavier buffer for optimized performance with specific ammunition types. The compatibility with standard AR-15 components ensures a wide range of customization options are available.

Pros and Cons of CMMG RECEIVER EXTENSION/STOCK KIT

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Who Should Buy CMMG RECEIVER EXTENSION/STOCK KIT?

The CMMG RECEIVER EXTENSION/STOCK KIT is perfect for AR-15 builders looking for a reliable and affordable mil-spec buffer tube assembly. It is ideal for casual shooters, range enthusiasts, and those building budget-friendly AR platforms. It would also work well for anyone doing an AR pistol build.

Those seeking high-end, feature-rich kits with advanced coatings or specialized components should skip this product. These people should be looking into more expensive buffer tube kits. A staked castle nut is a must-have modification for those seeking maximum security and reliability.

Conclusion on CMMG RECEIVER EXTENSION/STOCK KIT

The CMMG RECEIVER EXTENSION/STOCK KIT offers an excellent value proposition for AR-15 enthusiasts seeking a reliable and affordable buffer tube assembly. Its mil-spec dimensions, durable construction, and ease of installation make it a standout choice in its price range. The price of $85.99 is justified by its performance and durability.

I would personally recommend this kit to anyone building a budget-friendly AR-15 or upgrading an existing platform. It is a solid foundation that provides a stable and comfortable shooting experience. If you’re looking for a reliable buffer tube kit that won’t break the bank, the CMMG RECEIVER EXTENSION/STOCK KIT is definitely worth considering.

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